Very interesting remarktofro wrote:The 68SEC000 20MHz version can BTW easily be overclocked to 50MHz - That would be close to achieving the 68020's speed, with a CPU that is much easier to obtain.
I was often sceptical when 68K overclockers in the Atari/Amiga scene said that a system runs stable, because it depends a lot on the code the CPU executes. E.g. I could overclock the Q60 to 100 MHz and under SMSQ/E everything looked fine. Different story to compile a kernel or GCC from source under Linux.
But in this case I would indeed expect no problem. I just vaguely remember there was a die shrink of the 68SEC000 end of the nineties, and you should use the newer part.
Unfortunately the bus sizing of the 68SEC000 is static.